S
M
T
W
T
F
S
26
55°
48°
27
64°
47°
28
65°
42°
29
67°
46°
30
69°
55°
1
65°
44°
2
60°
46°
3
62°
48°
4
78°
51°
5
84°
61°
6
71°
64°
7
72°
46°
8
71°
45°
9
78°
56°
10
81°
57°
11
67°
44°
12
68°
42°
13
78°
54°
14
64°
56°
15
71°
55°
16
86°
54°
17
87°
65°
18
94°
67°
19
97°
71°
20
96°
73°
21
81°
61°
22
65°
56°
23
61°
56°
24
69°
60°
25
80°
66°
26
75°
68°
27
84°
67°
28
80°
62°
29
76°
61°
30
77°
51°
31
75°
62°
1
78°
57°
2
70°
54°
3
73°
57°
4
74°
62°
5
80°
64°
6
82°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Gloucester
Gloucester's May 2026 forecast shows daily high temperatures ranging from 70° to 82°, with overnight lows between 51° and 67°. The average high for May is 76° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Gloucester. See also: June | July | August.